• Corpus ID: 220935750

Muon Spin Relaxation and fluctuating magnetism in the pseudogap phase of YBa$_{2}$Cu$_{3}$O$_{y}$

@article{Zhu2020MuonSR,
  title={Muon Spin Relaxation and fluctuating magnetism in the pseudogap phase of YBa\$\_\{2\}\$Cu\$\_\{3\}\$O\$\_\{y\}\$},
  author={Zihao Zhu and Jian Zhang and Zhaofeng Ding and Cheng Tan and Changshen Chen and Qiong Wu and Yanxing Yang and Oscar O. Bernal and Pei-Chun Ho and Gerald D. Morris and Akihiro Koda and Adrian D. Hillier and Stephen P Cottrell and Peter J. Baker and Pabitra K. Biswas and Jun Qian and Xin Yao and Douglas E. MacLaughlin and Lei Shu},
  journal={arXiv: Strongly Correlated Electrons},
  year={2020}
}

• Zihao Zhu, Jian Zhang, +16 authors L. Shu
• Published 1 August 2020
• Physics
• arXiv: Strongly Correlated Electrons

We report results of a muon spin relaxation study of slow magnetic fluctuations in the pseudogap phase of underdoped single-crystalline YBa$_{2}$Cu$_{3}$O$_{y}$, $y = 6.77$ and 6.83. The dependence of the dynamic muon spin relaxation rate on applied magnetic field yields the rms magnitude~$B\mathrm{_{loc}^{rms}}$ and correlation time~$\tau_c$ of fluctuating local fields at muon sites. The observed relaxation rates do not decrease with decreasing temperature~$T$ below the pseudogap onset at $T^\ast$, as would be expected for a conventional magnetic transition; both $B\mathrm{_{loc}^{rms}}$ and $\tau_c$ are roughly constant in the pseudogap phase down to the superconducting transition. Corresponding NMR relaxation rates are estimated to be too small to be observable. Our results put strong constraints on theories of the anomalous pseudogap magnetism in YBa$_{2}$Cu$_{3}$O$_{y}$.